<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<body>
    <div id="app">
        <input type="text" v-model="name" placeholder="你的名字">
        <h1>hello,{{name}}</h1>
    </div>
<!--<script src="https://cdn.jsdelivr.net/npm/vue"></script>-->
<!--    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>-->
<script src="vue.js"></script>
    <script>
    var app=new Vue({
        el: '#app',
        data:{
            name: ''
        }
    })
</script>
</body>
</html>